Don, I mostly agree with your conclusion, but one issue I see is that the "faculty of discerning" would be a faculty of thought --- and not a faculty of the senses. The senses, anticipations included, are still in the "suck in all the sensory stimuli" phase.
I'm not seeing prolepsis as a faculty of thought. To me, there's only recognition of meaningful patterns on which thought can work to assign names or concepts. The analogy of the sieve is the best I can do right now, still feeling under the weather. I would agree that the faculty of prolepsis sucks in everything, but it's like that mechanical sorting bank that has slots for pennies, nickels, etc., in the crudest way. We're born with an innate sorting ability, otherwise our little brains would short circuit from all the stimuli. We have the ability to focus on patterns of significance in our environment. Now I'm not saying at this time how that translates into a "prolepsis of justice" etc., but I think I can get there from here.